Poor quality SSAW steel pipe is easy to produce burrs, because some inferior manufacturers have tinpot equipment. Prime Steel Pipe is positioned as an excellent steel pipe manufacturer and exporter for carbon steel pipe, we have over 20 years to manufacture SSAW steel pipe. So the SSAW steel pipe produced by Prime Steel Pipe all have the best quality, you can trustingly choose our spiral welded pipe. Generally, burrs will scratch the appearance of SSAW steel pipe and is easy to fold, the tendons are thin and low. and often appear full of dissatisfaction with the phenomenon. The reason is that the manufacturers to achieve a large negative tolerance, waste a few Road before the reduction of the amount of large, iron type is small, well filled dissatisfaction. Prone to crack. The reason is that the blank is the adobe, the adobe pores and more, adobe in the cooling process due to the role of thermal stress, cracks, after rolling there are cracks.
SSAW steel pipe regularly appear quality problems in the production and use. So we need to identify the quality of SSAW steel pipe, in accordance with a certain way and performance testing, can be used in the actual use of an important role. Then how to identify fake spiral steel pipe method: there often are pimple phenomenon in appearance. In general, the overall effect of weighing will be better, mainly taking into account the cumulative error and probability theory of this problem. Pitted surface is due to the serious wear and tear caused by the uneven appearance of spiral steel pipe irregular irregular flaws. As the shoddy SSAW steel pipe manufacturers to pursue profits, often rolling the most rolling standard. Appearance easy to produce scar.
The end of top crops is smooth and tidy, composition of high-quality SSAW steel pipe is evenly. The pseudo-poor material due to poor quality, cutting the end of the face often have the phenomenon of meat, that is uneven, and no metallic luster. And because the false product manufacturers cut off the small head, head and tail will appear big ears. The size of the inner diameter fluctuates greatly. The reason is that l steel temperature is unstable yin and yang face. The composition of the steel is not uniform. Folding is the appearance of spiral steel pipe formed a variety of polylines, this defect often runs through the entire product longitudinal. The reason for the folding is due to the pursuit of high efficiency of the manufacturers, the amount of depression is too large, the occurrence of ear, the next rolling when the folding, folding products will crack after bending, thick-walled spiral steel strength decreased.
The temperature of the pseudo-material rolling is not standard, no metallic luster. A pale red or similar pig iron color. Cross section is oval. The reason is that manufacturers in order to save information, waste roll two before the pressure is too large, the strength of this rebar greatly reduced, and does not meet the specifications of the size of rebar. There are two reasons:. Fake spiral steel pipe material is not uniform, more impurities. Pseudo-poor material manufacturers guide equipment is simple, easy to stick steel, these impurities bite into the roll after the easy to produce scar.